package ch03.shangJi.sj2.factory;

import ch03.shangJi.sj2.dao.ArithmeticDao;
import ch03.shangJi.sj2.dao.SubtractionDaoImpl;

public class SubtractionFactory implements ArithmeticFactory{
    @Override
    public ArithmeticDao getInstance() {
        return new SubtractionDaoImpl();
    }
}
